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Chapters1-3. Chapters4-5. Chapters 7-8. Chapter 9. Chapter 10. 1pt. 1 pt. 1 pt. 1pt. 1 pt. 2 pt. 2 pt. 2pt. 2pt. 2 pt. 3 pt. 3 pt. 3 pt. 3 pt. 3 pt. 4 pt. 4 pt. 4pt. 4 pt. 4pt. 5pt. 5 pt. 5 pt. 5 pt. 5 pt.

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Chapters1-3

Chapters4-5

Chapters 7-8

Chapter 9

Chapter 10

1pt

1 pt

1 pt

1pt

1 pt

2 pt

2 pt

2pt

2pt

2 pt

3 pt

3 pt

3 pt

3 pt

3 pt

4 pt

4 pt

4pt

4 pt

4pt

5pt

5 pt

5 pt

5 pt

5 pt


What is the percent yield of the reaction if 9.9g 2Pb(No3)2 are heated to giver 5.5g of PbO?

2Pb(NO3)2(s)  @PbO(s) + O2(g)

A) 44%

B) 56%

C)67%

D)82%


What is 82 %


12.7g Cu produced 38.1 g Ag. What is the percent yield of sliver in this reaction? Cu+2AgNO3Cu(NO3)+ 2Ag

A)56.7%

B)77.3%

C)88.2%

D)176%


What is 88.2%


According to the kinetic theory, collisions between molecules in a gas ____.

A) are perfectly elastic

B) are inelastic

C) never occur

D) cause a loss of total kinetic energy


What is Perfectly Elastic


Which of the following statements is part of the kinetic theory?

The particles of a gas move independently of each other.

The particles in a gas move rapidly.

The particles in a gas are relatively far apart.

all of the above


What is all of the above.


Which of the following statement is not true, according to the kinetic theory?

There is not attraction between particles of gas.

Only particles of matter in the gaseous state are in constant motion

The particles of a gas collide wit each other and with other objects

All of the statements are true


What is Only particles of matter in the gaseous state are in constant motion.


What instrument is normally used to measure atmospheric pressure?

A) Thermometer

B) Barometer

C) Vacuum

D) Manometer


What is a Barometer


What is the SI unit of pressure?

A) candela

B) mole

C) pascal

D) Newton


What is Pascal


Standard conditions when working with gases are defined as __?

0 K and 101.3 kPa

0 K and 1 kPa

0 C and 101.3 kPa

0 C and 1 kPa


What is 0 K and 101.3 kPa


What causes gas pressure in a container such as a helium balloon?

The walls of the container

The vacuum maintained in the container

The simultaneous collisions of fast-moving particles in the container

Atmospheric pressure acting on the outside walls of the container


What is the simultaneous collisions of fast-moving particles in the container


With which temperature scale is temperature directly proportional to average kinetic energy?

Celsius

Fahrenheit

Kelvin

Centigrade


What is kevlin


How is the ideal gas law usually written?

PV= R

nT

B) PV = nR

T

C) PV = nRT

D) P = nRT

V


What is PV= nRT


Which law can be used to calculate the number of moles of a contained gas?

Boyles law

combined gas law

ideal gas law

Charles law


What is ideal gas law


What happens to the partial pressure of oxygen in a sample of air if the temperature is increased?

It increases

It stays the same

It decrease.

the change cannot be determined


What is it stays the same


Which of the following gases will effuse the most rapidly?

A) bromine

B) chlorine

C) ammonia

D) hydrogen


What is hydrogen


Which of the following atoms would have the greatest velocity if each atom had the same kinetic energy ?

A) bromine

B) chlorine

C) ammonia

D) hydrogen


What is ammonia


Which of the following gases is the best choice for inflating a balloon that must remain inflated for a long period of time?

Argon

Oxygen

Hydrogen

Neon


What is oxygen


What causes waters low vapor pressure?

A) dispersion forces

B) covalent bonding

C) hydrogen bonding

D) ionic attractions


What is hydrogen bonding


What is the shape of the water molecule?

A) liner

B) tetrahedral

C) trigonal planer

D) bent


What is bent.


Which of the following is primarily responsible for holding water molecules together in the liquid states.

Dispersion forces

Hydrogen bonds

Ionic bonds

Polar covalent bonds


What is hydrogen bonds


Surface tension is ___?

Is the inward force which tends to minimize the surface area of liquid

may be increased by detergents

Is decreased by hydrogen bonding

causes beads of water to spread out.


What is the inward force which tends to minimize the surface area of liquid


The fact that ice is less dense than water is related to the fact that ___?

A) the molecular structure of ice is much less orderly than that of waterB) the molecules of ice are held to each other by covalent bonding

C) ice has a molecular structure in which water molecules are arranged randomly

D) ice has a molecular structure that is an open framework held together by hydrogen bonds


What is the molecular structure of ice is much less orderly than that of water


What is the number of Kg of solvent in a molar solution containing 5.0 grams of solute? (Molar mass = 30g)

0.24k

2.4k

0.11k

1.1k


What is 0.24k


To which of the following variables is change in a boiling point directly proportional?

Morality of solution

molality of solution

percent by volume of solution

percent (mass/mass) of solution


What is percent volume of solution


What is the freezing point of a solution of 0.5 mol of LiBr in 500 mL of water? (Kf=1.86 C/m)

-1.86 C

-3.72 C

-5.58 C

-7.44 C


What is – 1.86 C


What is the molality of a solution of water and KCL if the freezing point of the solution is -3 C? (Kf=1.86 C/m; molar mass of water =18 g)

0.6m

1.2m

0.8m

6m


What is 1.2 m


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